Granted Patent
Utility
US 6,356,323 · App. 09/637,133
Color display using cholesteric liquid crystals
Inventor:
Dwight J. Petruchik
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Aug 11, 2000
Inventor
Dwight J. Petruchik
Assignee (at issue)
EASTMAN KODAK COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.